To use this Avtec 7 - inch HDMI HD video monitor, first connect it to your camcorder via the HDMI cable. Since it doesn't come with a power supply, you'll need to use your own suitable power source. When using, avoid placing it in direct sunlight or very hot areas. Also, don't touch the screen with sharp objects to prevent further damage from the existing small scuff. For maintenance, use a soft, dry cloth to gently wipe the screen and the body of the monitor regularly. This will keep it clean and in good working condition.